Factorise:
1. 2x2 + 11x + 15
5. 3x + 13x + 12
9. 4m2 + 7m - 2
13. 5x2 + 9x - 18
17.-2x2 + 5x + 42
21. 15x4 - 10x3 - 25x2
25. 56x3 + 15x? - 56x
Answers
Answered by
0
Explanation:
1. 2x2+6x+5x+15
2x(x+3)+5(x+3)
(2x+5)(x+3).
sare aise hi Karne hai
Answered by
0
Answer:
1). 2x^2 + 6x + 5x + 15
= 2x(x+3)+5(x+3)
= (x+3)(2x+5)
5). 16x+12
4x(4+3)
9). 4 m^2 + 8m - m -2
4m(m+2) - (m +2)
(m+2)(4m-1)
13). 5x^2 + 15 x -6x -18
= 5x(x+3) - 6(x+3)
= (x+3)(5x-6)
21).5x^2(3x^2 - 2x - 5)
= 5x^2{ 3x^2 + 3x -5x - 5}
= 5x^2{3x(x+1) - 5(x-1)}
= (5x^2)(3x-5)(x+1)
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